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(Color online) Normalized velocity vectors and 3D swirl strength contours at the mid-coronal plane at five time instants over one cycle and two more time instants in the subsequent cycle. (a) t = 0.1316 s, (b) t = 0.1323 s, (c) t = 0.1330 s, (d) t = 0.1337 s, (e) t = 0.1344 s, (f) t = 0.13545 s, and (g) t = 0.1363 s. The figure in (a) is the zoomed-in view of the vertical velocity contours in the near-downstream region of the glottis.
